Nintendo Switch Pro Controller is PC Compatible
The Nintendo Switch Pro Controller will be able to connect to any Bluetooth-enabled PC, according to a video YouTube video posted by DreWoof.
The controller just needs to be paired with a PC via the Windows Bluetooth Settings. However, there is a catch. The controller cannot connect via USB-C, and therefore cannot charge while in use on a PC. Perhaps Nintendo will embrace this functionality and release a driver to make the controller compatible, but knowing Nintendo's track record, this seems unlikely.
However it is still pretty neat that the device is compatible, for owners looking to get some extra milage out of their $70 accessory.